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90 lines
2.3 KiB
90 lines
2.3 KiB
14 years ago
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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#include "hsMMIOStream.h"
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//////////////////////////////////////////////////////////////////////////////////////
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#if HS_BUILD_FOR_WIN32
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#include "hsExceptions.h"
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UInt32 hsMMIOStream::Read(UInt32 bytes, void* buffer)
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{
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fBytesRead += bytes;
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fPosition += bytes;
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int numItems = ::mmioRead(fHmfr, (char*)buffer, bytes);
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if ((unsigned)numItems < bytes)
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{
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if (numItems>=0 && ::mmioSeek(fHmfr,0,SEEK_CUR)==::mmioSeek(fHmfr,0,SEEK_END)) {
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// EOF ocurred
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char str[128];
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sprintf(str, "Hit EOF on MMIO Read, only read %d out of requested %d bytes\n", numItems, bytes);
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hsDebugMessage(str, 0);
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}
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else
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{
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hsDebugMessage("Error on MMIO Read",0);
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}
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}
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return numItems;
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}
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hsBool hsMMIOStream::AtEnd()
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{
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return (::mmioSeek(fHmfr,0,SEEK_CUR)==::mmioSeek(fHmfr,0,SEEK_END));
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}
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UInt32 hsMMIOStream::Write(UInt32 bytes, const void* buffer)
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{
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fPosition += bytes;
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return ::mmioWrite(fHmfr,(const char*)buffer,bytes);
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}
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void hsMMIOStream::Skip(UInt32 delta)
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{
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fBytesRead += delta;
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fPosition += delta;
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(void)::mmioSeek(fHmfr, delta, SEEK_CUR);
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}
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void hsMMIOStream::Rewind()
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{
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fBytesRead = 0;
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fPosition = 0;
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(void)::mmioSeek(fHmfr, 0, SEEK_SET);
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}
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void hsMMIOStream::FastFwd()
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{
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fBytesRead = fPosition = ::mmioSeek(fHmfr, 0, SEEK_END);
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}
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void hsMMIOStream::Truncate()
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{
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hsThrow("Truncate unimplemented by subclass of stream");
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}
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#endif
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